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32<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>qtextedit.h</h1>
33
34<p>This is the verbatim text of the qtextedit.h include file. It is provided only for illustration; the copyright remains with Trolltech.
35<hr>
36<pre>
37/****************************************************************************
38** $Id: qtextedit-h.html 2051 2007-02-21 10:04:20Z chehrlic $
39**
40** Definition of the QTextEdit class
41**
42** Created : 990101
43**
44** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
45**
46** This file is part of the widgets module of the Qt GUI Toolkit.
47**
48** This file may be distributed under the terms of the Q Public License
49** as defined by Trolltech ASA of Norway and appearing in the file
50** LICENSE.QPL included in the packaging of this file.
51**
52** This file may be distributed and/or modified under the terms of the
53** GNU General Public License version 2 as published by the Free Software
54** Foundation and appearing in the file LICENSE.GPL included in the
55** packaging of this file.
56**
57** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
58** licenses may use this file in accordance with the Qt Commercial License
59** Agreement provided with the Software.
60**
61** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
62** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
63**
64** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
65** information about Qt Commercial License Agreements.
66** See http://www.trolltech.com/qpl/ for QPL licensing information.
67** See http://www.trolltech.com/gpl/ for GPL licensing information.
68**
69** Contact info@trolltech.com if any conditions of this licensing are
70** not clear to you.
71**
72**********************************************************************/
73
74#ifndef QTEXTEDIT_H
75#define QTEXTEDIT_H
76
77#ifndef QT_H
78#include "qscrollview.h"
79#include "qstylesheet.h"
80#include "qptrvector.h"
81#include "qvaluelist.h"
82#include "qptrlist.h"
83#endif // QT_H
84
85#ifndef QT_NO_TEXTEDIT
86// uncomment below to enable optimization mode - also uncomment the
87// optimDoAutoScroll() private slot since moc ignores #ifdefs..
88#define QT_TEXTEDIT_OPTIMIZATION
89
90class QPainter;
91class QTextDocument;
92class QTextCursor;
93class QKeyEvent;
94class QResizeEvent;
95class QMouseEvent;
96class QTimer;
97class QTextString;
98class QTextCommand;
99class QTextParagraph;
100class QTextFormat;
101class QFont;
102class QColor;
103class QTextEdit;
104class QTextBrowser;
105class QTextString;
106struct QUndoRedoInfoPrivate;
107class QPopupMenu;
108class QTextEditPrivate;
109class QSyntaxHighlighter;
110
111#ifdef QT_TEXTEDIT_OPTIMIZATION
112class QTextEditOptimPrivate
113{
114public:
115 // Note: no left-tag has any value for leftTag or parent, and
116 // no right-tag has any formatting flags set.
117 enum TagType { Color = 0, Format = 1 };
118 struct Tag {
119 TagType type:2;
120 bool bold:1;
121 bool italic:1;
122 bool underline:1;
123 int line;
124 int index;
125 Tag * leftTag; // ptr to left-tag in a left-right tag pair
126 Tag * parent; // ptr to parent left-tag in a nested tag
127 Tag * prev;
128 Tag * next;
129 QString tag;
130 };
131 QTextEditOptimPrivate()
132 {
133 len = numLines = maxLineWidth = 0;
134 selStart.line = selStart.index = -1;
135 selEnd.line = selEnd.index = -1;
136 search.line = search.index = 0;
137 tags = lastTag = 0;
138 }
139 void clearTags()
140 {
141 Tag * itr = tags;
142 while ( tags ) {
143 itr = tags;
144 tags = tags-&gt;next;
145 delete itr;
146 }
147 tags = lastTag = 0;
148 tagIndex.clear();
149 }
150 ~QTextEditOptimPrivate()
151 {
152 clearTags();
153 }
154 int len;
155 int numLines;
156 int maxLineWidth;
157 struct Selection {
158 int line;
159 int index;
160 };
161 Selection selStart, selEnd, search;
162 Tag * tags, * lastTag;
163 QMap&lt;int, QString&gt; lines;
164 QMap&lt;int, Tag *&gt; tagIndex;
165};
166#endif
167
168class Q_EXPORT QTextEdit : public QScrollView
169{
170 friend class QTextBrowser;
171 friend class QSyntaxHighlighter;
172
173 Q_OBJECT
174 Q_ENUMS( WordWrap WrapPolicy )
175 Q_SETS( AutoFormatting )
176 Q_PROPERTY( TextFormat textFormat READ textFormat WRITE setTextFormat )
177 Q_PROPERTY( QString text READ text WRITE setText )
178 Q_PROPERTY( QBrush paper READ paper WRITE setPaper )
179 Q_PROPERTY( bool linkUnderline READ linkUnderline WRITE setLinkUnderline )
180 Q_PROPERTY( QString documentTitle READ documentTitle )
181 Q_PROPERTY( int length READ length )
182 Q_PROPERTY( WordWrap wordWrap READ wordWrap WRITE setWordWrap )
183 Q_PROPERTY( int wrapColumnOrWidth READ wrapColumnOrWidth WRITE setWrapColumnOrWidth )
184 Q_PROPERTY( WrapPolicy wrapPolicy READ wrapPolicy WRITE setWrapPolicy )
185 Q_PROPERTY( bool hasSelectedText READ hasSelectedText )
186 Q_PROPERTY( QString selectedText READ selectedText )
187 Q_PROPERTY( int undoDepth READ undoDepth WRITE setUndoDepth )
188 Q_PROPERTY( bool overwriteMode READ isOverwriteMode WRITE setOverwriteMode )
189 Q_PROPERTY( bool modified READ isModified WRITE setModified DESIGNABLE false )
190 Q_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly )
191 Q_PROPERTY( bool undoRedoEnabled READ isUndoRedoEnabled WRITE setUndoRedoEnabled )
192 Q_PROPERTY( int tabStopWidth READ tabStopWidth WRITE setTabStopWidth )
193 Q_PROPERTY( bool tabChangesFocus READ tabChangesFocus WRITE setTabChangesFocus )
194 Q_PROPERTY( AutoFormatting autoFormatting READ autoFormatting WRITE setAutoFormatting )
195
196public:
197 enum WordWrap {
198 NoWrap,
199 WidgetWidth,
200 FixedPixelWidth,
201 FixedColumnWidth
202 };
203
204 enum WrapPolicy {
205 AtWordBoundary,
206 AtWhiteSpace = AtWordBoundary, // AtWhiteSpace is deprecated
207 Anywhere,
208 AtWordOrDocumentBoundary
209 };
210
211 enum AutoFormatting {
212 AutoNone = 0,
213 AutoBulletList = 0x00000001,
214 AutoAll = 0xffffffff
215 };
216
217 enum KeyboardAction {
218 ActionBackspace,
219 ActionDelete,
220 ActionReturn,
221 ActionKill,
222 ActionWordBackspace,
223 ActionWordDelete
224 };
225
226 enum CursorAction {
227 MoveBackward,
228 MoveForward,
229 MoveWordBackward,
230 MoveWordForward,
231 MoveUp,
232 MoveDown,
233 MoveLineStart,
234 MoveLineEnd,
235 MoveHome,
236 MoveEnd,
237 MovePgUp,
238 MovePgDown
239 };
240
241 enum VerticalAlignment {
242 AlignNormal,
243 AlignSuperScript,
244 AlignSubScript
245 };
246
247 enum TextInsertionFlags {
248 RedoIndentation = 0x0001,
249 CheckNewLines = 0x0002,
250 RemoveSelected = 0x0004
251 };
252
253 QTextEdit( const QString&amp; text, const QString&amp; context = QString::null,
254 QWidget* parent=0, const char* name=0);
255 QTextEdit( QWidget* parent=0, const char* name=0 );
256 virtual ~QTextEdit();
257 void setPalette( const QPalette &amp; );
258
259 QString text() const;
260 QString text( int para ) const;
261 TextFormat textFormat() const;
262 QString context() const;
263 QString documentTitle() const;
264
265 void getSelection( int *paraFrom, int *indexFrom,
266 int *paraTo, int *indexTo, int selNum = 0 ) const;
267 virtual bool find( const QString &amp;expr, bool cs, bool wo, bool forward = TRUE,
268 int *para = 0, int *index = 0 );
269
270 int paragraphs() const;
271 int lines() const;
272 int linesOfParagraph( int para ) const;
273 int lineOfChar( int para, int chr );
274 int length() const;
275 QRect paragraphRect( int para ) const;
276 int paragraphAt( const QPoint &amp;pos ) const;
277 int charAt( const QPoint &amp;pos, int *para ) const;
278 int paragraphLength( int para ) const;
279
280 QStyleSheet* styleSheet() const;
281#ifndef QT_NO_MIME
282 QMimeSourceFactory* mimeSourceFactory() const;
283#endif
284 QBrush paper() const;
285 bool linkUnderline() const;
286
287 int heightForWidth( int w ) const;
288
289 bool hasSelectedText() const;
290 QString selectedText() const;
291 bool isUndoAvailable() const;
292 bool isRedoAvailable() const;
293
294 WordWrap wordWrap() const;
295 int wrapColumnOrWidth() const;
296 WrapPolicy wrapPolicy() const;
297
298 int tabStopWidth() const;
299
300 QString anchorAt( const QPoint&amp; pos );
301 QString anchorAt( const QPoint&amp; pos, AnchorAttribute a );
302
303 QSize sizeHint() const;
304
305 bool isReadOnly() const { return readonly; }
306
307 void getCursorPosition( int *parag, int *index ) const;
308
309 bool isModified() const;
310 bool italic() const;
311 bool bold() const;
312 bool underline() const;
313 QString family() const;
314 int pointSize() const;
315 QColor color() const;
316 QFont font() const;
317 QFont currentFont() const;
318 int alignment() const;
319 int undoDepth() const;
320
321 // do not use, will go away
322 virtual bool getFormat( int para, int index, QFont *font, QColor *color, VerticalAlignment *verticalAlignment );
323 // do not use, will go away
324 virtual bool getParagraphFormat( int para, QFont *font, QColor *color,
325 VerticalAlignment *verticalAlignment, int *alignment,
326 QStyleSheetItem::DisplayMode *displayMode,
327 QStyleSheetItem::ListStyle *listStyle,
328 int *listDepth );
329
330
331 bool isOverwriteMode() const { return overWrite; }
332 QColor paragraphBackgroundColor( int para ) const;
333
334 bool isUndoRedoEnabled() const;
335 bool eventFilter( QObject *o, QEvent *e );
336 bool tabChangesFocus() const;
337
338 void setAutoFormatting( uint features );
339 uint autoFormatting() const;
340 QSyntaxHighlighter *syntaxHighlighter() const;
341
342public slots:
343 void setEnabled( bool );
344#ifndef QT_NO_MIME
345 virtual void setMimeSourceFactory( QMimeSourceFactory* factory );
346#endif
347 virtual void setStyleSheet( QStyleSheet* styleSheet );
348 virtual void scrollToAnchor( const QString&amp; name );
349 virtual void setPaper( const QBrush&amp; pap );
350 virtual void setLinkUnderline( bool );
351
352 virtual void setWordWrap( WordWrap mode );
353 virtual void setWrapColumnOrWidth( int );
354 virtual void setWrapPolicy( WrapPolicy policy );
355
356 virtual void copy();
357 virtual void append( const QString&amp; text );
358
359 void setText( const QString &amp;txt ) { setText( txt, QString::null ); }
360 virtual void setText( const QString &amp;txt, const QString &amp;context );
361 virtual void setTextFormat( TextFormat f );
362
363 virtual void selectAll( bool select = TRUE );
364 virtual void setTabStopWidth( int ts );
365 virtual void zoomIn( int range );
366 virtual void zoomIn() { zoomIn( 1 ); }
367 virtual void zoomOut( int range );
368 virtual void zoomOut() { zoomOut( 1 ); }
369 virtual void zoomTo( int size );
370
371 virtual void sync();
372 virtual void setReadOnly( bool b );
373
374 virtual void undo();
375 virtual void redo();
376 virtual void cut();
377 virtual void paste();
378#ifndef QT_NO_CLIPBOARD
379 virtual void pasteSubType( const QCString &amp;subtype );
380#endif
381 virtual void clear();
382 virtual void del();
383 virtual void indent();
384 virtual void setItalic( bool b );
385 virtual void setBold( bool b );
386 virtual void setUnderline( bool b );
387 virtual void setFamily( const QString &amp;f );
388 virtual void setPointSize( int s );
389 virtual void setColor( const QColor &amp;c );
390 virtual void setFont( const QFont &amp;f );
391 virtual void setVerticalAlignment( VerticalAlignment a );
392 virtual void setAlignment( int a );
393
394 // do not use, will go away
395 virtual void setParagType( QStyleSheetItem::DisplayMode dm, QStyleSheetItem::ListStyle listStyle );
396
397 virtual void setCursorPosition( int parag, int index );
398 virtual void setSelection( int parag_from, int index_from, int parag_to, int index_to, int selNum = 0 );
399 virtual void setSelectionAttributes( int selNum, const QColor &amp;back, bool invertText );
400 virtual void setModified( bool m );
401 virtual void resetFormat();
402 virtual void setUndoDepth( int d );
403 virtual void setFormat( QTextFormat *f, int flags );
404 virtual void ensureCursorVisible();
405 virtual void placeCursor( const QPoint &amp;pos, QTextCursor *c = 0 );
406 virtual void moveCursor( CursorAction action, bool select );
407 virtual void doKeyboardAction( KeyboardAction action );
408 virtual void removeSelectedText( int selNum = 0 );
409 virtual void removeSelection( int selNum = 0 );
410 virtual void setCurrentFont( const QFont &amp;f );
411 virtual void setOverwriteMode( bool b ) { overWrite = b; }
412
413 virtual void scrollToBottom();
414
415 void insert( const QString &amp;text, uint insertionFlags = CheckNewLines | RemoveSelected ); // ## virtual in 4.0
416
417 // obsolete
418 virtual void insert( const QString &amp;text, bool, bool = TRUE, bool = TRUE );
419
420 virtual void insertAt( const QString &amp;text, int para, int index );
421 virtual void removeParagraph( int para );
422 virtual void insertParagraph( const QString &amp;text, int para );
423
424 virtual void setParagraphBackgroundColor( int para, const QColor &amp;bg );
425 virtual void clearParagraphBackground( int para );
426
427 virtual void setUndoRedoEnabled( bool b );
428 void setTabChangesFocus( bool b ); // ### make virtual in 4.0
429
430#ifdef QT_TEXTEDIT_OPTIMIZATION
431 void polish();
432 void setMaxLogLines( int numLines );
433 int maxLogLines();
434#endif
435
436signals:
437 void textChanged();
438 void selectionChanged();
439 void copyAvailable( bool );
440 void undoAvailable( bool yes );
441 void redoAvailable( bool yes );
442 void currentFontChanged( const QFont &amp;f );
443 void currentColorChanged( const QColor &amp;c );
444 void currentAlignmentChanged( int a );
445 void currentVerticalAlignmentChanged( VerticalAlignment a );
446 void cursorPositionChanged( QTextCursor *c );
447 void cursorPositionChanged( int para, int pos );
448 void returnPressed();
449 void modificationChanged( bool m );
450 void clicked( int parag, int index );
451 void doubleClicked( int parag, int index );
452
453protected:
454 void repaintChanged();
455 void updateStyles();
456 void drawContents( QPainter *p, int cx, int cy, int cw, int ch );
457 bool event( QEvent *e );
458 void keyPressEvent( QKeyEvent *e );
459 void resizeEvent( QResizeEvent *e );
460 void viewportResizeEvent( QResizeEvent* );
461 void contentsMousePressEvent( QMouseEvent *e );
462 void contentsMouseMoveEvent( QMouseEvent *e );
463 void contentsMouseReleaseEvent( QMouseEvent *e );
464 void contentsMouseDoubleClickEvent( QMouseEvent *e );
465#ifndef QT_NO_WHEELEVENT
466 void contentsWheelEvent( QWheelEvent *e );
467#endif
468 void imStartEvent( QIMEvent * );
469 void imComposeEvent( QIMEvent * );
470 void imEndEvent( QIMEvent * );
471#ifndef QT_NO_DRAGANDDROP
472 void contentsDragEnterEvent( QDragEnterEvent *e );
473 void contentsDragMoveEvent( QDragMoveEvent *e );
474 void contentsDragLeaveEvent( QDragLeaveEvent *e );
475 void contentsDropEvent( QDropEvent *e );
476#endif
477 void contentsContextMenuEvent( QContextMenuEvent *e );
478 bool focusNextPrevChild( bool next );
479 QTextDocument *document() const;
480 QTextCursor *textCursor() const;
481 void setDocument( QTextDocument *doc );
482 virtual QPopupMenu *createPopupMenu( const QPoint&amp; pos );
483 virtual QPopupMenu *createPopupMenu();
484 void drawCursor( bool visible );
485
486 void windowActivationChange( bool );
487
488protected slots:
489 virtual void doChangeInterval();
490 void sliderReleased(); // ### make virtual in 4.0
491#if (QT_VERSION &gt;= 0x040000)
492#error "Some functions need to be changed to virtual for Qt 4.0"
493#endif
494
495private slots:
496 void formatMore();
497 void doResize();
498 void autoScrollTimerDone();
499 void blinkCursor();
500 void setModified();
501 void startDrag();
502 void documentWidthChanged( int w );
503 void clipboardChanged();
504
505private:
506 struct Q_EXPORT UndoRedoInfo {
507 enum Type { Invalid, Insert, Delete, Backspace, Return, RemoveSelected, Format, Style, IME };
508
509 UndoRedoInfo( QTextDocument *dc );
510 ~UndoRedoInfo();
511 void clear();
512 bool valid() const;
513
514 QUndoRedoInfoPrivate *d;
515 int id;
516 int index;
517 int eid;
518 int eindex;
519 QTextFormat *format;
520 int flags;
521 Type type;
522 QTextDocument *doc;
523 QByteArray styleInformation;
524 };
525
526private:
527 void updateCursor( const QPoint &amp; pos );
528 void handleMouseMove( const QPoint&amp; pos );
529 void drawContents( QPainter * );
530 virtual bool linksEnabled() const { return FALSE; }
531 void init();
532 void checkUndoRedoInfo( UndoRedoInfo::Type t );
533 void updateCurrentFormat();
534 bool handleReadOnlyKeyEvent( QKeyEvent *e );
535 void makeParagVisible( QTextParagraph *p );
536 void normalCopy();
537 void copyToClipboard();
538#ifndef QT_NO_MIME
539 QCString pickSpecial(QMimeSource* ms, bool always_ask, const QPoint&amp;);
540 QTextDrag *dragObject( QWidget *parent = 0 ) const;
541#endif
542#ifndef QT_NO_MIMECLIPBOARD
543 void pasteSpecial(const QPoint&amp;);
544#endif
545 void setFontInternal( const QFont &amp;f );
546
547 virtual void emitHighlighted( const QString &amp; ) {}
548 virtual void emitLinkClicked( const QString &amp; ) {}
549
550 void readFormats( QTextCursor &amp;c1, QTextCursor &amp;c2, QTextString &amp;text, bool fillStyles = FALSE );
551 void clearUndoRedo();
552 void paintDocument( bool drawAll, QPainter *p, int cx = -1, int cy = -1, int cw = -1, int ch = -1 );
553 void moveCursor( CursorAction action );
554 void ensureFormatted( QTextParagraph *p );
555 void placeCursor( const QPoint &amp;pos, QTextCursor *c, bool link );
556 void updateMicroFocusHint();
557
558#ifdef QT_TEXTEDIT_OPTIMIZATION
559 bool checkOptimMode();
560 QString optimText() const;
561 void optimSetText( const QString &amp;str );
562 void optimAppend( const QString &amp;str );
563 void optimInsert( const QString &amp;str, int line, int index );
564 void optimDrawContents( QPainter * p, int cx, int cy, int cw, int ch );
565 void optimMousePressEvent( QMouseEvent * e );
566 void optimMouseReleaseEvent( QMouseEvent * e );
567 void optimMouseMoveEvent( QMouseEvent * e );
568 int optimCharIndex( const QString &amp;str, int mx ) const;
569 void optimSelectAll();
570 void optimRemoveSelection();
571 void optimSetSelection( int startLine, int startIdx, int endLine,
572 int endIdx );
573 bool optimHasSelection() const;
574 QString optimSelectedText() const;
575 bool optimFind( const QString &amp; str, bool, bool, bool, int *, int * );
576 void optimParseTags( QString * str, int lineNo = -1, int indexOffset = 0 );
577 QTextEditOptimPrivate::Tag * optimPreviousLeftTag( int line );
578 void optimSetTextFormat( QTextDocument *, QTextCursor *, QTextFormat * f,
579 int, int, QTextEditOptimPrivate::Tag * t );
580 QTextEditOptimPrivate::Tag * optimAppendTag( int index, const QString &amp; tag );
581 QTextEditOptimPrivate::Tag * optimInsertTag( int line, int index, const QString &amp; tag );
582 void optimCheckLimit( const QString&amp; str );
583 bool optimHasBoldMetrics( int line );
584
585private slots:
586 void optimDoAutoScroll();
587#endif // QT_TEXTEDIT_OPTIMIZATION
588
589private:
590#ifndef QT_NO_CLIPBOARD
591 void pasteSubType( const QCString &amp;subtype, QMimeSource *m );
592#endif
593
594private:
595 QTextDocument *doc;
596 QTextCursor *cursor;
597 QTimer *formatTimer, *scrollTimer, *changeIntervalTimer, *blinkTimer, *dragStartTimer;
598 QTextParagraph *lastFormatted;
599 int interval;
600 UndoRedoInfo undoRedoInfo;
601 QTextFormat *currentFormat;
602 int currentAlignment;
603 QPoint oldMousePos, mousePos;
604 QPoint dragStartPos;
605 QString onLink;
606 WordWrap wrapMode;
607 WrapPolicy wPolicy;
608 int wrapWidth;
609 QString pressedLink;
610 QTextEditPrivate *d;
611 bool inDoubleClick : 1;
612 bool mousePressed : 1;
613 bool cursorVisible : 1;
614 bool blinkCursorVisible : 1;
615 bool readOnly : 1;
616 bool modified : 1;
617 bool mightStartDrag : 1;
618 bool inDnD : 1;
619 bool readonly : 1;
620 bool undoEnabled : 1;
621 bool overWrite : 1;
622
623private: // Disabled copy constructor and operator=
624#if defined(Q_DISABLE_COPY)
625 QTextEdit( const QTextEdit &amp; );
626 QTextEdit &amp;operator=( const QTextEdit &amp; );
627#endif
628};
629
630inline QTextDocument *QTextEdit::document() const
631{
632 return doc;
633}
634
635inline QTextCursor *QTextEdit::textCursor() const
636{
637 return cursor;
638}
639
640inline void QTextEdit::setCurrentFont( const QFont &amp;f )
641{
642 QTextEdit::setFontInternal( f );
643}
644
645#endif //QT_NO_TEXTEDIT
646#endif //QTEXTVIEW_H
647</pre>
648<!-- eof -->
649<p><address><hr><div align=center>
650<table width=100% cellspacing=0 border=0><tr>
651<td>Copyright &copy; 2007
652<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
653<td align=right><div align=right>Qt 3.3.8</div>
654</table></div></address></body>
655</html>
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